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Verdict: Ring’s Air Quality Monitor is a $69.99 indoor sensor for tracking PM2.5, carbon monoxide (CO), humidity and temperature in the Ring app. Its decisive limitation is that it does not measure carbon dioxide (CO2) or radon, and Ring says it is not a replacement for a dedicated CO detector.
What the Ring Air Quality Monitor measures
Ring’s product and support documentation identify four measured categories:
- PM2.5 particulate matter
- Carbon monoxide (CO)
- Humidity
- Temperature
One Ring FAQ refers to five components of air quality but then names these four categories; no fifth pollutant is specified in the documentation. Treat the device as an indoor trend and comfort monitor, not a complete gas-safety or environmental testing system.
The omission that determines whether it is useful
No CO2 measurement
No. The Ring monitor does not measure CO2. That rules it out if your main goal is judging ventilation, detecting buildup in bedrooms or offices, or using occupancy-related CO2 trends to decide when to open windows or increase fresh-air exchange.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
No radon measurement
Ring also says the monitor does not detect radon. If radon risk is your concern, you need a radon-specific test or monitor designed for that purpose; the Ring sensor cannot screen for it.
It is not a substitute for a CO alarm
Ring’s support documentation states: “Air Quality Monitor is not a replacement for a dedicated CO detector.” Keep certified life-safety CO alarms installed according to local requirements. The monitor’s CO readings are an additional source of information, not your only warning system.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
How readings are reported
The monitor reports temperature, humidity, PM2.5 and CO every 15 minutes, according to Ring’s 2026 support documentation. Temperature can report immediately after a change of ±2°F (±1°C), while humidity can report immediately after a change of ±5%. Ring advises allowing up to 24 hours after setup for readings to stabilize.
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| Measurement | Published specification or threshold | What it means |
|---|---|---|
| Temperature | Accuracy ±0.81°F (±0.45°C) | Manufacturer-stated accuracy |
| Humidity | Accuracy ±4.5% | Manufacturer-stated accuracy |
| PM2.5 | “Good” at or below 35.0 μg/m³; “poor” above 35.0 μg/m³ | Ring’s published categorization threshold |
| Carbon monoxide | “Good” at or below 9.0 ppm; “poor” above 9.0 ppm | Ring’s published categorization threshold |
These are specifications and limits published by Ring, not results from an independent laboratory test. No independent accuracy benchmark is established here.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Connectivity, setup and placement
What you need
- A Ring account and the Ring mobile app
- Amazon Sidewalk coverage at the installation location
- An indoor power outlet
Ring says no additional hub, sign-up fee or subscription is required to connect the monitor. Connectivity uses Amazon Sidewalk rather than your normal Wi-Fi network. Ring says Sidewalk reaches approximately 95% of the U.S. population, but coverage varies by location, so availability at your address is not guaranteed.
Setup procedure
- Place the monitor indoors near the area you want to observe.
- Connect the supplied power cable and power adapter.
- Open the Ring app and choose the option to add the Air Quality Monitor.
- Scan the QR code when prompted to connect the device.
- Leave it running for up to 24 hours while readings stabilize.
Where to place it
For more reliable readings, keep the monitor away from direct sunlight, heat vents, cooking areas and strong airflow. It is rated for indoor use only.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Hardware and operating limits
| Specification | Ring Air Quality Monitor |
|---|---|
| Dimensions | 46.6 × 65 × 65 mm (1.83 × 2.56 × 2.56 inches) |
| Color | White |
| Power input | 100–240 VAC, 50/60 Hz |
| Operating temperature | 32°F to 104°F (0°C to 40°C) |
| Included | Monitor, one power cable and one power adapter |
| Certifications | UL and FCC |
| Warranty | One-year limited warranty |
Is it worth $69.99?
Ring lists the monitor at $69.99 on its product page, accessed October 17, 2026. It is a reasonable fit when you already use Ring products, want app-based PM2.5, CO, humidity and temperature trends, and have Sidewalk coverage. The no-subscription setup also keeps the ownership model simple.
It is a poor fit when CO2 or radon is the reason you are shopping, when Sidewalk coverage is unavailable, or when you need a certified replacement for a dedicated CO alarm. Before choosing any competing monitor, compare the sensor list, network dependency, alerting ecosystem, reporting interval, published accuracy information and whether it serves as a comfort monitor or a life-safety alarm.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Common questions
Does the Ring air quality monitor measure CO2?
No. Ring explicitly says it does not measure CO2.
Does Ring’s air monitor detect radon?
No. Radon is not one of the gases measured by this device.
Do I need Amazon Sidewalk?
Yes. The monitor uses Amazon Sidewalk, and coverage varies by location. Ring estimates that Sidewalk covers approximately 95% of the U.S. population.
How often does it update?
Temperature, humidity, PM2.5 and CO are reported every 15 minutes. Temperature and humidity can update sooner after the documented change thresholds are reached.
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Can it replace a carbon monoxide detector?
No. Ring specifically says it is not a replacement for a dedicated CO detector.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
